Some more photos might be helpful. If it is smooth then it looks like the finish coat just got sanded back a little bit too much but then sometimes the glass cloth is a little high in the laminate layer (on a PU board at least) and this can happen. Over the years I've noticed this on plenty of my PU boards in the odd spot here or there and it never made a difference and never led to delamination. Actually I have never had a board delaminate but I always kept them out of the sun and in a cover.

At first glance looks like an over sanding. If you could post another pic a little zoom out.But at first glance does not look like something to be worried about
The best advice to extend the life of the board is to keep it away from high temperatures (leaving it inside a car on a hot sunny day etc). If ever you sustain a ding take the board out of the water and let it dry thoroughly before attempting to repair. When repairing ALWAYS use EPOXY resin!!!

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Def over sanding. Its primarily cosmetic and should have no structural impact. I have the same thing on some of my FW's. It a QC issue and something I hope FW continues to improve on because ultimately it can be avoided.

I guess you're worried it might be an avenue for water to be absorbed? I seriously don't think so because the strand of fibre glass will be impregnated with epoxy resin anyway and indeed these "skins" have a few layers to them which would prevent any water getting to the core. So even if any water was absorbed into the glass strand it would just sit there in the outer layer.

Nevertheless, you can quickly test whether there is any "void" by putting a droplet of water over the top of this apparently exposed fibre glass. If it is absorbed then there is a void and maybe a drop of resin will fill it (but wait for the drop of water to dry out) it might be a bit tricky getting the resin to absorb. Some NanoTune might also do the trick - if you are really worried, but I don't think there is any need to.

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I guess you're worried it might be an avenue for water to be absorbed? I seriously don't think so because the strand of fibre glass will be impregnated with epoxy resin anyway and indeed these "skins" have a few layers to them which would prevent any water getting to the core. So even if any water was absorbed into the glass strand it would just sit there in the outer layer.

Nevertheless, you can quickly test whether there is any "void" by putting a droplet of water over the top of this apparently exposed fibre glass. If it is absorbed then there is a void and maybe a drop of resin will fill it (but wait for the drop of water to dry out) it might be a bit tricky getting the resin to absorb. Some NanoTune might also do the trick - if you are really worried, but I don't think there is any need to.

Thanks, yeah im just really paranoid about such things as imperfections. >.>

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Surfing my Pnator the other day and my leash broke and my board gets sent to the shore break and gets rolled around on the stones in the high tide shore break! Resulting in two dings, a few rail cracks and a few scratches under the nose! Gutted as only a month old. Professional repair job under yay for that board.

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Surfing the mentawais this year and I take my custom FW 6 channel perfect wave board..not a true to label FW but made by someone heavily involved in building the prototypes in the early days of FW so exactly the same construction...I climb, crawl, get rag dolled over razor sharp reef and get stung about a dozen times by fire coral...the board is tantalizingly close but..in a shallow lagoon and at this point untouched by the reef...I literally body surf over a coral head put the tips of my fingers on it and the wave I body surfed peters out so that I stop but...my board gets bounced 20 meters over dry reef in front of me...resulting in a dozen gouges and a nasty hole....gutted...I feel your pain.

Surfing my Pnator the other day and my leash broke and my board gets sent to the shore break and gets rolled around on the stones in the high tide shore break! Resulting in two dings, a few rail cracks and a few scratches under the nose! Gutted as only a month old. Professional repair job under yay for that board.